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    • Question

      The mean proportion of 324 and 225

      is:
      A 240 Correct Answer Incorrect Answer
      B 300 Correct Answer Incorrect Answer
      C 320 Correct Answer Incorrect Answer
      D 270 Correct Answer Incorrect Answer

      Solution

      Mean proportion of two numbers 'a' and 'b' = √(ab)
      Therefore, required mean proportion = √(324 X 225) = 18 X 15 = 270

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